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Finding the Fourth Proportional to 565.69, 847.38 and 291.21

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Solution

The fourth proportional to 565.69, 847.38 and 291.21 is: 436.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.69 : 847.38 = 291.21 : x
  2. Step 2: Convert to fraction form
    565.69/847.38 = 291.21/x
  3. Step 3: Cross multiply
    565.69x = 847.38 × 291.21
  4. Step 4: Simplify right side
    565.69x = 246,763.97
  5. Step 5: Solve for x
    x = 246,763.97/565.69
  6. Step 6: Final answer
    x = 436.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.